Friendly, easy-to-use book that covers the main questions about correct grammar and punctuation. Includes a complete section on comma use. Also includes many of the confusing word usage issues, such as affect/effect, complement/compliment, discrete/discreet, and principal/principle. Everything is easy to find because all entries are in alphabetical order — and there is a complete index too. Lie or lay? Got it! I or me? Got it!